-79.26% is the change from 217 to 45
Calculation steps:
[( 45 - 217 ) ÷ 217] x 100 = -79.26%
Formula
Percentage change = [(45 - 217) / 217] x 100
Subtract the new number by the original number
45 - 217 = -172
-172 ÷ 217 = -0.7926267281105991
-0.7926267281105991 x 100 = -79.26%